Synthesis, structures and magnetic properties of 2-aminomethylpyridine–Ni(II) complexes

Abstract

A family of complexes of Ni(II), 2-aminomethylpyridine (ampy) and tricyanomethanide (tcm) have been prepared and studied by IR, X-ray crystallography and variable temperature susceptibility. The complexes synthesized include [Ni(ampy) 3](ClO 4) 2 ( 1), [Ni(ampy) 3](tcm)(PF 6) ( 2), [Ni(ampy) 3](PF 6) 2 ( 3), [Ni(ampy) 2(H 2O) 2]Cl 2 ( 4), and [Ni(ampy) 2(tcm) 2] ( 5). No coordination polymers of tcm were obtained. The magnetic behavior of the complexes, and the known material [Ni(ampy)(NO 3) 2], is dominated by single-ion anisotropy effects with D-values in the range of −2 to −12 K, although some compounds show a weak antiferromagnetic interaction.